TY  - DATA  
TI  - Broadbalk Wheat Experiment organic manure chemical composition 
CY  - Electronic Rothamsted Archive, Rothamsted Research 
DB  - e-RA - the electronic Rothamsted Archive 
PY  - 2024 
DP  - Rothamsted Research, Harpenden, Herts, AL5 2JQ, UK. 
M3  - xlsx 
ET  - 1.0 
LA  - None 
UR  - https://doi.org/10.23637/rbk1-FYM-01 
DO  - 10.23637/rbk1-FYM-01 
AU  - Glendining, Margaret 
AU  - Gregory, Andy 
AU  - Poulton, Paul 
AU  - Wilmer, Wendy 
KW  - arable soils, Broadbalk long-term experiment, Rothamsted Research, farmyard manure, nitrogen content, 
AB  - Details of the chemical composition of the organic manures applied to the Broadbalk Wheat Experiment, 1850-2019. Farmyard manure (FYM) is applied each autumn at 35t/ha to treatment strip 2.1 (also known as 2A or 21) since 1885, to treatment strip 2.2 (also known as 2B or 22) since 1843, and to strip 01 in 1968-2000 only, from cattle housed on cereal straw. Rapeseed cake or castor bean meal was applied to strip 19 until 1988, to supply around 96kgN/ha; it was also applied to other strips 1843-1872.  FYM and castor bean meal has been analysed routinely since 1967.  This dataset gives details of the chemical composition: % total N, C, P, K, Ca, Mg, Na and S, and the total amount of each element applied each year 1967-2019. There is also some limited mean data for earlier periods and trace element data for 1982 and 1983.  





The FYM supplies on average 249 kgN/ha, 48 kgP/ha and 326kgK/ha; the rape cake/castor meal 104 kgN/ha, 17 kgP/ha and 19 kgK/ha. For comparison, the standard inorganic fertilizer treatments on Broadbalk receive 0-288 kgN/ha, 35kgP/ha, and 90 kgK/ha.  
ER  -